Here is the latest Iowa news from The Associated Press at 3:40 a.m. CST

OMAHA, Neb. (AP) — Officials say the reservoirs along the Missouri River are ready to handle the floodwaters that are expected to flow into the system this year. The U.S. Army Corps of Engineers says it has the full flood storage space available in the reservoirs, so it is in good shape headed into the year.

CEDAR RAPIDS, Iowa (AP) — Democrat Elizabeth Warren is taking aim at President Donald Trump, saying he “may not even be a free person” by next year’s election. The Massachusetts senator has largely avoided talking about Trump since she began testing the waters for a campaign more than a month ago. She’s been a frequent target of the president, who has criticized her past claims to Native American heritage, including in a tweet Saturday night.

ELDORA, Iowa (AP) — Video taken on the cellphone of a woman accused of abusing her boyfriend’s young son shows the boy screaming in agony that he needed to use the bathroom before he eventually wets himself. The Courier reports that prosecutors showed the cellphone video of the 8-year-old boy Friday during the kidnapping trial of 40-year-old Traci Tyler. Tyler and her boyfriend, 30-year-old Alex Shadlow, are each charged with kidnapping in the abuse case.

ASBURY, Iowa (AP) — Hundreds of water-soaked library books in eastern Iowa are in a deep-freeze while officials figure out how to save the publications. The Telegraph-Herald reports the books were damaged Feb. 1 when a pipe burst in the Dubuque County Library’s branch in Asbury. When books get wet, they must be frozen within hours to prevent the growth of mold. The books were first moved to a refrigerated semi-trailer provided by Hy-Vee and then carried to another trailer provided by Hirschbach Motor Lines.